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.\" ========================================================================
.\"
.IX Title "METAR 1"
.TH METAR 1 "2005-04-08" "metar 20061030.1" "metar"
.SH "NAME"
metar \- A METAR downloader/decoder
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBmetar\fR [\-dvh] stations
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\s-1METAR\s0 reports are meteorological weather reports for aviation. \fBmetar\fR is a
small program which downloads weather reports for user-specified stations and
optionally decodes them into a human-readable format.
.PP
Aviation weather stations are commonly referred to by \s-1ICAO\s0 designator. The
\&\s-1ICAO\s0 is the International Civil Aviation Organization, a international
standardization body for civil organization. For example, \s-1KJFK\s0 is the \s-1ICAO\s0
identifier for John F. Kennedy Airport in New York, New York, \s-1EHAM\s0 is the \s-1ICAO\s0
identifier for Amsterdam Schiphol Airport, The Netherlands, etc.
.SH "OPTIONS"
.IX Header "OPTIONS"
\&\fBmetar\fR requires at least one station identifier to run. A full list of \s-1ICAO\s0
stations is available for download at
\&\fIhttp://weather.noaa.gov/data/nsd_bbsss.txt\fR.
.PP
\&\fBmetar\fR supports three additional options:
.IP "\fB\-d\fR Decode the retrieved weather reports into a human-readable format." 4
.IX Item "-d Decode the retrieved weather reports into a human-readable format."
.PD 0
.IP "\fB\-v\fR Be verbose while retrieving a report." 4
.IX Item "-v Be verbose while retrieving a report."
.IP "\fB\-h\fR Show a short help summary" 4
.IX Item "-h Show a short help summary"
.PD
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
If the environment variable \s-1METARURL\s0 is set, \fBmetar\fR will attempt to download
the weather report from that location, rather than from the default (the \s-1NOAA\s0
web site). The value of \s-1METARURL\s0 will be postfixed with the capitalized
station \s-1ID\s0, followed by the .TXT extension. 
.Sp
For example, if you have \s-1METAR\s0 reports in your home directory, setting
\&\s-1METARURL\s0 to \f(CW$HOME\fR and asking for the weather report of ehgr will result in the
file \f(CW$HOME\fR/EHGR.TXT to be read.
.SH "AUTHOR"
.IX Header "AUTHOR"
Kees Leune <kees@leune.org>